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In May 1953, scientists James Watson and Francis Crick wrote the article “Genetical Implications of the Structure of Deoxyribonucleic Acid,”…
LiteratureDNANucleic AcidsDeoxyriboseGeneticsKurt Benirschke studied cells, placentas, and endangered species in Germany and the US during the twentieth century. Benirschke was professor at the…
Developmental BiologyGeneticsEndangered SpeciesGene librariesEmbryologyThe 1981 Adolescent Family Life Act, or AFLA, is a US federal law that provides federal funding to public and nonprofit private organizations to…
Sexual AbstinenceSexual abstinence--Religious aspects--Catholic ChurchSexual abstinence--Religious aspectsSexual abstinence--Religious aspects--ChristianityChurch schools--Law and legislation--United StatesTwentieth-century researcher Ernest John Christopher Polge studied the reproductive processes of livestock and determined a method to successfully…
Smith, Audrey U.Parkes, A. S. (Alan Sterling), 1900-1990National Institute for Medical Research (Great Britain)Medical Research Council (Great Britain)GlycerinConrad Hal Waddington was an embryologist and theoretical biologist. His early experimental work investigated aspects of embryonic induction and the…
EpigenomicsEpigeneticsBiographyLeo Kanner studied and described early infantile autism in humans in the US during the twentieth century. Though Eugen Bleuler first coined the term…
AutismAutism in childrenIn 2013, Olivier Lourdais, Sophie Lorioux, and Dale DeNardo conducted a study on the impact of the reproductive effort on the muscle size and the…
Snakes--PhysiologyPythonsVitellogenesisSnakes--ReproductionEggs--IncubationIn 1873 Italy, Camillo Golgi created the black reaction technique, which enabled scientists to stain and view the structure of neurons, the…
TechnologyNeuronsAxonsDendritesSilver NitrateLeonard Hayflick studied the processes by which cells age during the twentieth and twenty-first centuries in the United States. In 1961 at the Wistar…
PeopleCellsCell populationsCell DeathApoptosisLynn Petra Alexander Sagan Margulis was an American biologist, whose work in the mid-twentieth century focused on cells living together in a mutually…
Eukaryotic cellsMitosissymbiosisMitochondriaMicroorganisms--Evolution